Service Engine Soon light?
Also known as the CE light? Check engine.
Sounds more like your park/neutral switch. If it'* bad, you should have a code set, but not a light. If you have a center console shifter, as opposed to column shift, it'* located in the center console beside the shifter linkage, and if I recall, it'* white.
To open the console, pull the clip out of the forward face of the base of the shifter handle, and lift the handle up. Remove 2 torx screws inside the ashtray (under the insert). The console pivots up from the rear hinge. You'll see everything inside.